The Dials contain sunray and guilloche finishes, and are generally shielded by scratch-resistant sapphire crystals. Connected into the cases are buttery-clean Barenia leather straps, normally in the colour within your picking. Chronographs — with their bezels, scales and sub-dials — are sometimes regarded as too complex for formal responsibility by https://www.watchesworld.com/understanding-the-complex-world-of-chronometers/